~400 dollar HTPC. Looking for suggestions.

DIDN'T GET ANY RESPONSES, SO I JUST WENT FOR IT. Used a different case, though.

Approximate Purchase Date: This week.

Budget Range: Preferably under 400 dollars (including rebates).

System Usage from Most to Least Important: Downloading/watching HD videos, surfing the internet, some programming, basic office stuff.

Parts Not Required: Keyboard, mouse, monitor, speakers.

Preferred Website(s) for Parts: Newegg/Amazon.

Country: USA

Parts Preferences: by brand or type: No preference

Overclocking: No

SLI or Crossfire: No

Monitor Resolution: Not sure.

Additional Comments:
Preferably as silent as possible. I will be doing minimal to no gaming on this computer- maybe minesweeper. I'm thinking of trying linux for an OS.

Here are the parts I've chosen along with the prices:
CPU: Intel Core i3-2120 3.3GHz Dual-Core Processor ($114.99 @ Newegg)
Motherboard: ASRock H61M-GE Micro ATX LGA1155 Motherboard ($62.99 @ Newegg)
Memory: Patriot Signature 4GB (1 x 4GB) DDR3-1333 Memory ($19.99 @ Newegg)
Hard Drive: Samsung Spinpoint F3 1TB 3.5" 7200RPM Internal Hard Drive ($79.99 @ Newegg)
Case: NZXT Gamma Classic (Black) ATX Mid Tower Case ($39.99 @ Amazon)
Power Supply: Corsair 430W ATX12V Power Supply ($36.98 @ Newegg)
Optical Drive: Sony AD-7280S-0B DVD/CD Writer ($17.99 @ Amazon)
Total: $372.92

Mostly, I just want to know if everything looks okay or if anyone has suggestions for how I can improve this build while staying at about 400 dollars. My main want is to be able to download and watch the highest quality videos possible with no problems. From my understanding, the Intel HD 2000 on this chip would do that well- although I saw a few forum posts saying otherwise. And the motherboard should be compatible. But, if you have any recommendations for a different motherboard (or any other part), please let me know. Also, would the PSU work okay?

Thanks for any input! I'm new at this and it's all a bit confusing.